Automatic lock sliders



Jan. 29, 1957 H. MORIN 2,779,078

AUTOMATIC LOCK SLIDERS Filed June 2, 1951 INVENTOR A@ Il t e 5ms H. MORIN I9 Il' R ll MTORNE? United States Patent() AUTOMATIC LOCK SLIDERS Louis H. Morin, Bronx, N. Y.

Application June 2, 1951, Seal No. 229,638

13 Claims. (Cl. 24-205.14)

This invention relates to lock sliders for 1separable fastener stringers. More particularly, the invention deals with a lock slider, wherein the slider body and lock yoke can be die cast in a completely formed manner, thus avoiding drilling and other operations on these parts preparatory to assemblage and, further, wherein the several parts of the slider are assembled in .a single riveting operation.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

Fig. 1 is a plan View of a slider made according to my invention, with parts of the construction broken away and in section.

Fig. 2 is a side and sectional view of the slider, as seen in Fig. 1, with parts of the construction broken away.

Fig. 3 is a partial section on the line 3-3 of Fig. l.

Fig. 4 is a partial section on the line 4-4 of Fig. 3; and

Fig. 5 is a partial section on the line 5--5 of Fig. 1.

In the production of sliders of the kind under consideration, it has been necessary to perform drilling and other operations upon the parts to facilitate assemblage thereof and the purpose of my present invention is to provide a simple lock slider construction, wherein the several cast parts are simply formed in the casting operation and, in assemblage of the parts, a simple riveting operation is performed.

in Figs. l and 2 of the drawing, I have shown at 10 a slider body, comprising a top wall 11, a bottom wall 12, said walls being joined at the Wide end of the slider by `a connecting web 13. The walls, at the contracted end portion of the slider body, have inwardly extending flanges 11'; 12 defining the channel body. The top wall 11 has, at the forward portion of the web 13, an outwardly projecting tapered and substantially elliptical pin member or post 14 having a reduced outer rivet end 15. The wall 11, at opposite sides of the pin member 14, is provided with arc-shaped recesses 16, note Figs. 3 and 4 of the drawing.

The wall 11 has, centrally thereof and adjacent the pin member 14, a longitudinal key recess 17 on the outer surface thereof. The wall 11, at the lower portion of the recess 17, has an outwardly projecting Istop pin 18 and said end of the Wall 11 has, at opposite sides of the pin 18, longitudinal recesses or apertures 19 and 20 arranged in staggered relationship, as clearly seen in Fig. l; that is to say, the aperture 19 extends upwardly onto the wall 11 to a greater extent than the aperture 20. The lower end portion of the wall 11 has an outwardly projecting bridging portion 21, which forms a stop, checking movement of a lock element comprising a yoke or arm 22 in movement there-of into inoperative position.

It will be apparent from a consideration of Fig. 2 of the drawing that the apertures 19 and 20 open into the channel of the slider body, so that spaced lock pins or ICC fingers 23 and 24 of the yoke 22 are free to move into engagement with scoops of opposed stringers, when ar ranged in the channel, in manners well known in the art of separable fasteners. For this reason, no showing of the separable fastener is made.

The lock finger 23 has a long bevel or cam surface 25, which extends into and is disposed within the recessed portion 26 of the yoke 22, so as to be engaged by the crosshead or pivot pin end 27 of a pull 28, in a manner clearly seen in Fig. 2 of the drawing.

The pivot pin end 27 of the pull has a central integral ring or ridge portion 29 which operates in the key recess 17 and in a corresponding key recess 30 formed in the undersurface of the recessed portion of the yoke, as clearly seen in Fig. 2. This construction maintains the pull 28 against lateral swinging movement or, in other words, maintains longitudinal alinement 0f the pull with respect to the slider body. The pull 23 has a large opening 31 extending downwardly from the pivot pin end 27 and preferably shaped to substantially clear the bridging portion 21 on the slider wall 11.

The lock finger 24 has a downwardly projecting stop lug 32, note Figs. 2 and 5, which is adapted to strike the bridging portion 21 in checking outward movement of the lower portion of the yoke 22 in movement of the fingers 23 and 24 out of the channel of the slider body.

The yoke 22 has a large substantially rectangular aperture 33 therein to receive the piu member 14, suiiicient clearance being provided at upper and lower surfaces of the pin 14, as seen in Fig. 2, to provide free swinging movement of the yoke 22. The aperture 33 opens into a large diameter rectangular aperture 34 at the outer surface of the yoke to receive, with ample clearance, a rectangular retainer ring or plate 35, secured in position by the rivet end 15, as is clearly apparent from a consideration of Figs. 2 .and 3 of the drawing. The yoke 22, within the aperture 34, has two side arc-shaped bearing portions 36, one of which is shown in section in Fig. 4, which extend or project from shoulders at the base of the large aperture 34, and these bearing portions are adapted to bear upon the undersurface of the ring 35, in the manner seen in Fig. 4.

It will be understood that the bearing portions 36 are held in this engaging position by a coil spring 37 mounted in an aperture 38 in the wall 11 and web 13, the spring 37 also seating in a recess 39 on the lower surface of the alined portion of the yoke 22. The spring 37 is tensioned to normally maintain the lock ngers 23 and 24 in operative position, as shown in Fig. 2; whereas, in movement of the slider in the direction of the arrow 40 of Fig. 2 by operation of the pull 28 will cause the lock fingers 23 and 24 to be moved out of the channel of the slider body by engagement of the pin 27 with the cam surface 25. The yoke 22 rocks on the bearings 36 in this operation.

It will also be apparent that, in movement of the slider 16 in a direction opposite to that of the arrow 40, the pin 27 of the pull 28 will operate upon the rounded surface 41 of the yoke 22 to again move the lock lingers 23 and 24 into inoperative position. When the pull 2S is free, the lock fingers 23 and 24 are automatically moved into locking or operative position.

Considering Fig. 4 of the drawing, it will appear that the yoke 22 includes two arc-shaped lower` surfaces 42 which operate in the arc-shaped recesses 16. This construction maintains alincment of the yoke 22 on the slider body and also facilitates the free swinging movement of the yoke.

It will appear from a consideration of Fig. 2 of the drawing that the lower surface of the yoke at the upper end thereof is cut away or bevelled, as seen at-43, in

f av'aors. i n

order to provide the free swinging movement of the 'ridge 29 operates in the key grooves or recesses 1] and 3@ to at all times maintain alinement of the pull on the slider wall.

From the foregoing, it will be apparent that a lock slider construction can be economically produced, no? only from the standpoint of the production of Vthe several parts, but still more so from the standpoint of eliminating machining operations and providing a single assembly operation by the heading of the rivet portion.

After the slider body 10, lock element or yoke and pull have been die cast, it being understood that the rivet portion i5 is normally unheaded, assemblage is made as follows. The spring 37 is arranged in the recess 38, then arranging the pull 28 upon the slider wall il with the ring 29 in the key groove 17, after which the yoke 22 is placed in position to receive the spring 3i? and to dispose the ring 29 in the groove or recess 3d. Thereafter, the ring or plate 35 is mounted on the unheaded rivet portion 15; whereupon, this rivet portion is headed, in the manner clearly illustrated in Fig. 2

and, in this single heading or riveting operation, a complete assemblage of the parts is made.

lt will be understood that the stop pin 18 serves to check downward movement of the pull, that is, movement in a downward direction as seen in Fig. 2, and so helps to reduce strain upon the stop lug 32. That is to say, when pull 2S is lifted to the usual operating angle, say about 20 or so relative to wall 1i, and then drawn in the direction of arrow 4G, the lug 32 will engage bridge 2l, ln this movement, the pin or axle 27 of the pull will bear partially against the cam surface 2S and partially against pin 18, and thus pin 18 serves to take up some of the force exerted through the pull. On the larger sized sliders, in particular, this force may be considerable, and in the absence of pin 1S might result in placing undue strain on lug 32.

ln the operation of the slider, it will be apparent that the rounded -or arc-shaped bearing portions 36 are .maintained in constant engagement with the plate 35 by the spring 37 and the rounded or arc-shaped portions d'2 operate in the grooves or recesses i6 to maintain alinernent of the lock element on the slider wall, which alinernent is further maintained by operation of the fingers 2,3 and E@ in the apertures 19 and 21B.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A lock slider comprising a channelled slider body having an upwardly projecting post on one wall thereof, a lock element mounted on the post and spaced :from said wall for swinging movement relatively to the wall, a plate fixed to the post for retaining the lock element against displacement from the slider body, said lock ele- Arent having curved bearing portions engaging said plate to form a pivot mounting of the lock element on said post, a spring disposed between the slider body and said lock element for maintaining said bearings in engagement with said plate, a pull for moving the lock element, and interenvaging means on the pull and lock element for maintaining the pull in longitudinal alinement with respect to the slider body.

2. A lock slider comprising a -channelled slider body, having a narrow end portion and a wide end portion, said body being dened by walls spaced by a connecting web at the wide end of said body, one wall of said body havingr` at the narrow end portion thereof, an aperture opening into the channel of said body, a lock element having a projecting lock finger operating in said aperture for movement into and out of the channel of said body, said wall of the slider body, at the wide end portion thereof, having an upwardly projecting post, said lock element being mounted on the post and spaced from said wall for swinging movement relatively to the wall, a plate fixed to the post for retaining the lock element against displacement from the slider body, said lock element having curved bearing portions engaging said plate to form a pivot mounting of the lock element on said post, a spring disposed betweeu the slider body and said lock element for maintaining said bearings in engagement with said plate and normally supporting the lock linger of said element in projected position in the channel of said slider body, a pull arranged between the lock element and said wall of the slider body and operatively engaging cam surfaces on said element for moving the lock element into inoperative position, and interengaging means between the lock element and slider wall at opposed sides of said post for al ining the lock element on the slider wall.

3. A lock slider comprising a channelled slider body, a lock element and a pull, one wall of the slider body having a projecting post, the lock element having an aperture therein which opens through its upper side to receive the post, said aperture being larger than the post to provide free swinging movement of the lock element with respect to said post, a plate in said aperture riveted to the outer end portion of the post for assembling the lock element with said slider body, said lock element having, at opposed sides thereof, outwardly extending curved bearing portions engaging the undersurface of said plate for pivotal mounting of the lock element on said post, said lock element being spa-eed from said slider wall to permit the lock element to rock relatively to said wall, tensional means between the slider body and lock element to maintain said bearing portions in constant engagement with said plate, said lock element having a nger normally extended into the channel of the slider body by said tensional means, said pull having a pivot portion disposed and retained between the lock element and said wall of the slider body and operatively engaging the lock element for movement thereof into inoperative position against the action of said tensional means, and interengaging means on the pull and on the lock element and said slider wall for maintaining the pull in longitudinal alinement with respect to the slider body.

4. .A lock slider comprising a channelled slider body, a lock element and a pull, one wall of the slider body having a projecting post, the lock element being apertured to receive the post to provide free swinging movement of the lock element with respect to said post, a plate riveted to the outer end portion of the post for assembling the lock element with said slider body, said lock element having, at opposed sides thereof, outwardly extending curved bearing portions engaging the undersurface of said plate for pivotal mounting of the lock element on said post, tensional means between the slider body and lock element to maintain said bearings in constant engagement with said plate, said lock element having a linger normally extended into the channel of the slider body by said tensional means, said pull having a pivot portion disposed and retained between the lock element and said wall of the slider body and operatively engaging the lock element for movement thereof into inoperative position against the action of said tensional means, said lock element having spaced cam surfaces engaged by the pivot portion of the pull in actuation of said lock element, means checking movement of the lock element into inoperative position by said pull, said last named means comprising a stop pin on said wall of the slider bodyengaged by the pivot portion of the pull, the pivot portion of the pull having projecting key means, and said wall of the slider body and said lock element having key grooves in which said key means operates to maintain alinerncnt of the pull on the slider body.

5. In lock sliders of the character described, a channelled slider body having, on one wall thereof, a projecting pivot post, an elongated lock element arranged on said wall of the slider body, said element being apertured to ifreely receive said post, and being spaced from the wall in the vicinity of the post to enable the lock element to rock relatively to the Wall means at opposed sides of said post for keying and alining the lock element on said Wall of the slider body, a bearing plate secured to said post for retaining said element against displacement from the slider body, said element having, at opposed sides of the post, projecting curved bearing portions engaging the undersurface of said plate to provide pivotal mounting of the element on the slider body, and a spring arranged between the slider body and said element to normally maintain said curved bearing portions in engagement with said plate.

6. ln lock sliders of the character described, a channelled slider body having, on one wall thereof, a project ing pivot post, an elongated lock element arranged on said wall of the slider body, said element being apertnred to freely receive said post, means at opposed sides of said post for keying and alining the lock clement on said Wall of the slider body, a bearing plate secured to said post for retaining said element against displacement from the slider body, said element having, at opposed sides of the post, projecting curved bearing portions engaging the undersurface of said plate to provide pivotal mounting of the element on the slider body, a spring arranged between the slider body and said element to normally maintain said curved bearing portions in engagement with said plate, a pull movable relatively to said element for moving the latter into inoperative position against the action of said spring, and means for checking movement of the lock element into inoperative position.

7. A lock slider having a post on one wall thereof, a lock element supported on the post, means for anchoring the lock element to said post, means on the lower portion of the lock element comprising spaced rounded portions extending from the edges of the lock element, said rounded portions being disposed on opposite sides of the post, recesses in said wall on opposite sides of the post for receiving said rounded portions, `and means on the upper portion of the lock element comprising spaced rounded extensions engaging said anchoring means for enabling the lock element to rock about the post.

8. In a lock slider of the character described, a channeled slider body having on o-ne wall a projecting post, an elongated lock element arranged on said post, said element having an aperture extending vertically therethrough for receiving said post, a rounded extension projecting from the wall of said aperture on each side of a pair of. opposed sides thereof, a member secured to said post for `retaining said element against displacement from the slider body, said extensions engaging said member to provide a pivotal mounting of the element on the post, means at opposed sides of said post for keying and alining the lock element on said Wall of the slider body, a spring arranged between the slider body and said element to normally maintain said extensions in engagement with said member, and a pull for moving the lock element into inoperative position against the action of said spring.

9. In a lock slider of the character described, a channeled slider body having on one wall a projecting tapered pivot post, an elongated lock element arranged on said post, said element having an aperture of substantial depth extending vertically therethrough for receiving said post, the walls of said aperture closely surrounding said post on -all sides, at least one extension projecting from the wall of said aperture, a member disposed in said aperture and secured to said post for retaining said element against displacement from the slider body, said extension engaging said member to provide a pivotal mounting of the element on the post, and means at opposed sides of said post for keying and alining the lock element on said wall of the slider body, said means comprising recesses in the slider Wall and extensions on the lock element engaging said recesses.

10. in a lock slider of the character described, a :channeled slider body having on one wall a projecting post, a lock element arranged on said post, said element having an aperture extending vertically therethrough for receiving said post, at least one extension projecting from the wall of said aperture, a member secured to said post for retaining said element against displacement from the slider body, said extension engaging said member to pro vide a pivotal mounting of the element on the post, and means at opposed sides of said post for keying and alining the lock element on said wall of the slider body.

ll. ln a lock slider of the character described, a channeled slider body having on one wall a stationary projecting post, a lock element on the post having an aperture extending therethrough for receiving said post, a shoulder in said aperture having at least one rounded extension projecting therefrom, a stationary member disposed in said aperture and lixedly secured to said post for retaining said element against displacement from the slider body, and said extension engaging said member to provide a pivotal mounting of the element on the post.

l2. In a lock slider of the character described, a channel slider body having a post on one Wall thereof, a lock element on said wall having an aperture for receiving said post, at least one arc-shaped extension projecting from the wall of said aperture, a member secured to said post for retaining said element against displacement from the slider body, said extension engaging said member to provide a pivotal mounting of the element on the post, a pull for moving the lock element, said pull having a pivot portion on which is disposed an annular ridge, and said lock element and slider Wall having grooves for receiving said annular ridge.

13. A lock slider having a stationary post on one wall thereof, a lock element on said Wall, an opening in the lock element of a size larger than the post for receiving the latter, a stationary anchoring member disposed in the opening and fixedly secured to the post, said member sccuring the lock element to the post, said lock element being so spaced from said wall as to permit the lock element to move relatively to the Wall, means on the lock element comprising spaced extensions engaging said anchoring member to enable the lock element to rock about said post.

References Cited in the file of this patent UNITED STATES PATENTS 147,561 Judd Feb. 17, 1874 1,782,752 Weisler Nov. 25, 1930 2,018,948 Corner Oct. 29, 1935 FOREIGN PATENTS 610,897 Great Britain of 1948 828,314 France of 1938 

